Have won and lost myself in the past...

PIANO MAN. ''I

July 14, 1986

MOSCOW — PIANO MAN. ''I have won and lost myself in the past,'' former President Richard Nixon said at a reception honoring American athletes in the Goodwill Games. Then he strolled over to the piano and banged out ''God Bless America.'' Guests said Nixon, 73, appeared cheerful as he joked with participants in the July 5-20 international sports competition organized by Turner Broadcasting System of Atlanta.